Question:a + b = a - b, হলে b এর মান কত? 

A `-1` 
B `0` 
C `1/2` 
D `2` 

+ Answer
B 

+ Explanation
a + b = a - b  বা, a + b - a + b = 0   বা, 2b = 0,  বা, b = 0

+ Report

Zinia Islam

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